CANAAN TWP. - A 42-year-old inmate at the federal prison near Waymart has been sentenced to 15 years in prison after being found guilty of "assaulting a correctional officer and inflicting bodily injury," according to the United States Attorneys Office for the Middle District of Pennsylvania.

District Court Judge Malachy E. Mannion imposed the sentenced on Jose Montalban, 42.

A jury found Montalban guilty of assault and illegal possession of a weapon following a three-day jury trial.

According to United States Attorney Peter Smith, the evidence at trial established that on Dec. 28, 2012, Montalban, who was serving a federal prison sentence for bank robbery, walked into an office at the USP-Canaan and took a six-inch sharpened plastic knife and began stabbing a correctional officer who was seated alone in that office.

The correctional officer was stabbed three times in the face before he and other correctional officers who responded to the unprovoked attack were able to subdue Montalban.

The correctional officer sustained three puncture wounds to the face which required nine sutures at a local hospital.

The case was investigated by special agents of the Federal Bureau of Investigation and the Bureau of Prisons. Assistant United States Attorney John Gurganus prosecuted the case.